Eyeglass-mounting.



J. M. GHPPEL. lEYEGLBS MOUNTING. Arrmoulon Hmm JULI 9,1906.

Patented Dec. 22, 1908.

JAMES M. GHAPPEL, OF DALLAS, TEXAS.

E YE GLASS-MOUNTING.

Specification 0i' Letters Patent.

Patented Dec. 22, 1908.

` Application filed July 9, 1906. Serial No. 325,208.

To all whom fit may concern:

Be it known that I, JAMES M. CHAPPEL, residing at Dallas, in the county of Dallas and State of Texas, have invented a certain new and useful Improvement in Eyeglass- Mountings, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to improvement-s in eyeglass mountings and relates particularly to the construction of the bridgepiece or spring and to the box and strap which are fastened to the lenses.

More specifically the invention relates to a bridge piece or spring which is arranged in a manner such that the large bow spring over nose is done away with, and at the same time the nose guards are held snugly against the sides of the nose.

It has been found that in order to provide a bridge piece of the character described, it necessary to have a small wire passing across the nose and to arrange upon the ends of this wire suitable spring devices for bringing about the proper clamping of the nose between the noseguards. In the present device this is accomplished by arranging the ends of this wire in a bent form about the boxes, in a manner such that plane profile coils are formed which have the effect of per-y mitting theV boxes with their lenses to be opening outward thereby spreading the nose guards suiiiciently to permit the mounting being placed upon the nose then these profile; coils return the lenses to their proper position and the nose is tightly clamped between the guards.

It is also a feature of this invention to provide in connection with this bridge piece a suitable box and strap for receiving the same and for supporting the lenses.

It has been found in practice that boxes of ordinary construction are very ineiicient by reason of the fact that when the bridge piece and the nose guard are clamped therein the screws holding these parts work loose and permit them to move back and` forth. In the present device, however, this disadvantage has been obviated by arranging the box with an opening therethrough to receive the guard and the bridge piece and thenslitting the edge of the box in the back to permit the front portion thereof to be brought down tightly against the parts thus doing away with their working against the head of wall of the box without in any way affecting the flange or head of the screw. In the arrangement of a box in this manner, with the front portion thereof so that it may be drawn in against the bridge piece andnose guard, these parts may be of any size or thick` ness and may be readily inserted within the box without filing or cutting on account of the fact that the front of the box will give sufficiently to admit them. Then when the clamping screw is inserted the front of the box will be drawn down upon the parts so that they are jammed or clamped tightly against the back of the box. In fact even when the bridge piece and nose guard are less in thickness than the opening in the box this front portion can be drawn down tightly' so that theedge thereof bears against the parts and jams them against the back of the box thus holding them in place and preventing any movement thereof.

The invention may be further briefly summarized as consisting in the construction and combination of parts hereinafter set forth in the following description, drawings and claims.

Referring to the drawings, Figure l shows a pair of glasses with my invention applied thereto; Fig. 2 is a top plan view of the same partly in section; Fig. 3 is a perspective view of the bridge piece, Fig. 4 is a sectional view on the line 4 4-, Fig. l, and Fig. 5 is a sectional view upon the line 5 5, Fig. 4.

Any preferred form and construction of parts may be employed in the carrying out of my invention but I have shown one form in the drawings which meets the necessary requirements very effectively, and in such embodiment l and 2 represent the lenses which are provided with the usual openings for receiving the screws 3, of the straps 4, which extend around the edges of the lenses and are each provided upon one side of the lens with a stud 5, having a threaded opening for receiving a screw 6, passing through the box 7 This box 7, has an opening through the same for receiving the nose guard 8, and the bridge piece to be described.

The box 7, is preferably split upon the `edge 9, whereby the front portion 10 of the box is` free to be drawn down tightly against the parts contained therein. This fron-t portion 10, is provided with an opening 171', for the passage of the screw 6, therethrough and the opening is such that the head of the screw is countersunk in the box. By splitting the edge of the box it can be readily understood that when the bridge piece and nose guard are inserted, the screw 6, thereof, may be brought down upon front of the box causing it to be drawn against these parts and there clamp them in place. The obj ect of this construction is to prevent the working of the parts and causing the rotation of the screw and the loosening of the same.

The stud 5 has a threaded opening 12, through the same for the passage of the screw 3, and the location of this opening is such that when the screw 6, is firmly seated and the parts drawn up to the proper tension, the end of the screw 6, is embedded in the shank of the screw 5, thereby preventing the latter from rotating and permitting the lens to become loose in the strap.

The bridge piece 13, is preferably formed of a single piece of wire arranged to span the nose and having at each end a transversely disposed profile coil consisting of a portion 14, extending along the rear edge of the box; a portion 15, extending to the front over the top of the box, a portion 16, ex-

Itending down along the front edge of the box and in the plane with the lens, and a short portion 17 connected to a loop 18, which is flattened and is arranged to talre around the screw 6, within the box. From this arrangement of a profile coil upon both ends of the bridge piece it will be seen that the lenses and their boxes may be sprung out of alinement to permit the nose guards 8, to be spread apart to receive the nose, and bring about a firm engagement of the nose pieces upon the sides of the nose and prevent the glasses from shaking or jarring olf. They also admit of the lenses being stretched away from each other Vin the placing of the glasses upon the nose.

The portion 16, of the profile coil is adapted to engage the end of the strap, as shown in Fig. 2 when the lenses are being sprung out of alinement and prevents all of the strain coming on the portion of the wire coil passing into the box by such engagement.

Having described my invention, 1 claim:

1. In an eye glass mounting, lenses, boxes secured thereto and a bridging member bent about the boxes as follows, upwardly along the rear side, forwardly over the top, downwardly along the front side, and into the box from the bottom! thereof.

2. In an eye glass mounting, lenses, boxes secured thereto, a bridging member having portions bent at right angles around the boxes and following closely the contour thereof, said portions extending upwardly along the rear side, forwardly over the top, downwardly along the front side, and into the boxes at the bottom thereof.

3. ln a mounting for eyeglasses, the combination with the lenses, of a pair of boxes secured thereto, a bridge-piece provided upon each end with a plane profile coil extendingl up from the back, over the top, down the front, and under the box and means for securing said coils to the boxes.

4. An eye glass spring comprising a cross piece, and side pieces at the ends of the cross piece arranged approximately at a right angle thereto and comprising portions curved upwardly, rearwardly, downwardly, thence forwardly and upwardly, the upwardly extending terminals being adapted to be attached to the studs of the eye glasses.

In testimony whereof affix my signature in the presence of two witnesses.

JAMES M. CHAPPEL. Vitnesses:

A. A. BEMis, B. W. BRocxErT. 

